Loose leaf binder



Patented Feb. 7, 1939 UNITED STATES PATENT OFFICE LOOSE LEAF BINDER Edward F. Buenger,

Chicago, Ill., a corporation of Massachusetts Application May 21,

2 Claims.

This invention relates to loose leaf binders and particularly to wire rib metals for the same.

It is an object of this invention to provide a four ring wire rib metal in which all the rings open and close simultaneously. Other objects of the invention will become apparent upon reading the following description, taken in conjunction with the accompanying drawing, in which Figure 1 is a perspective view of a loose leaf' binder metal'embodying the invention;

Figure 2 is an inverted plan view of the metal shown in Figure 1; and Figure 3 is a cross sectional view taken along the line vIII---III of Figure 2.

In the drawing, the reference numeral 2 indicates a metal cover plate provided with a pair of apertures 3 through w 'ch rivets or other fastening means may be passed to secure the metal to Athe back of a cover to form a loose leaf binder. 20 The cover plate 2 is provided with a plurality of apertures 4 which are arranged to permit the sheet retaining ring members 5 to project therethrough. In the embodiment of the invention illustrated in Figures' l, 2 and 3, four of said sheet 25 retaining ring members 5 are shown.

Two pairs of wire members 6 and 1 are arranged within the cover plate with laterally projecting portions 8 and 9 of each pair engaged to form a toggle connection. The end extensions of 30 the wire members 6 and 1 project through the apertures 4 and are bent into semi-circular formation.- The ends of each member 6 meet the ends of the opposed member 1 to form one pair of sheet retaining rings 5.

35 A straight wire member or rod I0 is welded at f its ends to the inner ends of the members 6, as indicated at ll. A similar wire member or rod l2 is welded to the inner ends of the members 1,

as indicated at I3. The wires I0 and Il may be 40 welded to the members 6 and 1 after the members 6 and 1 are assembled in the cover plate 2, but

1936, Serial No. 80,986

it is preferred to weld them first and then assemble the welded units into the cover plate. It will be seen from Figure 2, that the unit consisting of the two members 6 and the welded wire l0 is a duplicate of the unit consisting of the two members 1 and the welded wire l2. The units are interchangeable so that there are no rights and lefts to complicate the assembly. rIhe units are rigid so that when any ring member 5 is opened or closed the other ring members open or close simultaneously.

From the foregoing it will be seen that I have devised an inexpensive wire rib ring metal having four rings which may be operated simultaneously. Although Ihave described a preferred embodiment of the invention in detail, it will be understood that the description thereof is illustrative, rather than restrictive, as many details may be modified or changed without departing from the spirit or scope of my invention. cordingly, I do not desire to be restricted to the exact construction described, except as limited by the appended claims.

I claim:

l. In a ring metal for loose leaf binders, a cover plate, a plurality of wire members positioned in said cover plate, the ends of said wire members projecting through said cover plate to form ring members, said ring members being spaced longitudinally of each other, and a pair of wire rods Welded to the inner ends of said wire members to cause all of said ring members to operate simultaneously.

2. A four ring wire rib metal comprising two sets of wire members spaced longitudinally of each other, each of said sets of wire members having its ends bent to form a pair of ring members, and a rod rigidly joining one wire member of each set to one wire member of the other set.

EDWARD F. BUENGER. 

